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Errno

NAME

Errno - System errno constants

SYNOPSIS

use Errno qw(EINTR EIO :POSIX);

DESCRIPTION

"Errno" defines and conditionally exports all the error constants
defined in your system "errno.h" include file. It has a single export
tag, ":POSIX", which will export all POSIX defined error numbers.

"Errno" also makes "%!" magic such that each element of "%!" has a
non-zero value only if $! is set to that value. For example: